I love your graphic about last year's Springfield tornadoes. I lived in eastern Massachusetts at the time, and, though our weather wasn't nearly as severe as in Springfield and surrounding communities, we still had some nasty weather. In the middle of the morning we had a torrential downpour with a severe thunderstorm, but that soon passed and the skies were nice and sunny. After another few hours, all H broke out.
What I find even more amazing is that this was predicted so accurately in advance, so people could prepare for it. If I recall correctly, Massachusetts was even given a TOR:CON index of 10.